<html>
<head>
    <meta charset="UTF-8">
    <link href="static/assets/global/plugins/bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css"/>
    <link href="static/assets/global/css/components.css" rel="stylesheet" type="text/css"/>
    <link href="static/assets/admin/pages/css/login.css" rel="stylesheet" type="text/css"/>
    <script src="static/assets/global/plugins/jquery-1.11.0.min.js" type="text/javascript"></script>
    <title>Title</title>
</head>
<body class="login">
<div class="content">
    <h3 class="form-title">商品详情</h3>
    <div id="promoStartDateContainer" class="form-group">
        <label style="color:blue" id="promoStatus" class="control-label"></label>
        <div>
            <label style="color:red" class="control-label" id="promoStartDate" />
        </div>
    </div>
    <div class="form-group">
        <div>
            <label class="control-label" id="title" />
        </div>
    </div>
    <div class="form-group">
        <div>
            <img style="width:200px;height:auto;" id="imgUrl">
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品描述</label>
        <div>
            <label class="control-label" id="description" />
        </div>
    </div>
    <div id="normalPriceContainer" class="form-group">
        <label class="control-label">商品价格</label>
        <div>
            <label class="control-label" id="price" />
        </div>
    </div>
    <div id="promoPriceContainer" class="form-group">
        <label style="color:red" class="control-label">秒杀价格</label>
        <div>
            <label style="color:red" class="control-label" id="promoPrice" />
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品库存</label>
        <div>
            <label class="control-label" id="stock" />
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">商品销量</label>
        <div>
            <label class="control-label" id="sales" />
        </div>
    </div>
    <div class="form-actions">
        <button class="btn blue" id="createOrder" type="submit">
            立即购买
        </button>
    </div>
</div>
</body>

<script>
    var g_itemView = {};
    $(document).ready(function() {
        // 获取商品详情
        $.ajax({
            type: "GET",
            url: "http://localhost:8080/item/get",
            data: {
                "id": getParam("id"),
            },
            xhrFields:{
                withCredentials:true
            },
            success: function(data) {
                if (data.status == "success") {
                    g_itemView = data.data;
                    reloadDom();
                    setInterval(reloadDom, 1000);
                } else {
                    alert("获取信息失败，原因为" + data.data.errMsg);
                }
            },
            error: function(data) {
                alert("获取信息失败，原因为" + data.responseText);
            }
        });
        $("#createOrder").on("click", function() {
            $.ajax({
                type: "POST",
                url: "http://localhost:8080/order/createorder",
                contentType: "application/x-www-form-urlencoded",
                data: {
                    "itemId": g_itemView.id,
                    "promoId": g_itemView.promoId,
                    "amount": 1,//暂时写死为一件
                },
                xhrFields:{
                    withCredentials:true
                },
                success: function(data) {
                    if (data.status == "success") {
                        alert("下单成功");
                        window.location.reload();
                    } else {
                        alert("下单失败，原因为" + data.data.errMsg);
                        if (data.data.errCode == 20003) {
                            window.location.href="login.html";
                        }
                    }
                },
                error: function(data) {
                    alert("下单失败，原因为" + data.responseText);
                }
            });
        });
    });
    function reloadDom() {
        $("#title").text(g_itemView.title);
        $("#imgUrl").attr("src", g_itemView.imgUrl);
        $("#description").text(g_itemView.description);
        $("#price").text(g_itemView.price);
        $("#stock").text(g_itemView.stock);
        $("#sales").text(g_itemView.sales);
        if (g_itemView.promoStatus == 1) {
            // 秒杀活动还未开始
            console.log(g_itemView.startDate);
            var startTime = g_itemView.startDate.replace(new RegExp("-", "gm"), "/");
            startTime = (new Date(startTime)).getTime();
            var nowTime = Date.parse(new Date());
            var delta = (startTime - nowTime) / 1000;
            if (delta <= 0) {
                // 活动开始了
                g_itemView.promoStatus = 2;
                reloadDom();
            }
            $("#promoStartDate").text("秒杀活动将于："+g_itemView.startDate+" 开始售卖 倒计时："+delta+"  秒");
            $("#promoPrice").text(g_itemView.promoPrice);
            $("#createOrder").attr("disabled", true);
        } else if (g_itemView.promoStatus == 2) {
            // 秒杀活动进行中
            $("#promoStartDate").text("秒杀正在进行中");
            $("#promoPrice").text(g_itemView.promoPrice);
            $("#createOrder").attr("disabled", false);
            $("#normalPriceContainer").hide();
        }
    }
    function getParam(paramName) {
        paramValue = "", isFound = !1;
        if (this.location.search.indexOf("?") == 0 && this.location.search.indexOf("=") > 1) {
            arrSource = unescape(this.location.search).substring(1, this.location.search.length).split("&"), i = 0;
            while (i < arrSource.length && !isFound)
                arrSource[i].indexOf("=") > 0 && arrSource[i].split("=")[0].toLowerCase() == paramName.toLowerCase() && (paramValue = arrSource[i].split("=")[1], isFound = !0), i++
        }
        return paramValue == "" && (paramValue = null), paramValue
    }
</script>

</html>